package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/**
 * 执行DML语句
 */
public class JDBCDemo3 {
    public static void main(String[] args) throws Exception {
        //需求:向userinfo表中插入一条记录
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root");
        System.out.println("与数据库链接成功!");
        Statement statement = connection.createStatement();
        /*
            INSERT INTO userinfo(username,password,nickname,age)
            VALUES('张三','123456','阿三',22)
         */
        String sql = "INSERT INTO userinfo(username,password,nickname,age) " +
                "VALUES('张三','123456','阿三',22) ";
        /*
            Statement专门用于执行DML语句的方法
            int executeUpdate(String sql)
            返回值表达执行后影响了表中多少条记录
         */
        int num = statement.executeUpdate(sql);
        System.out.println(num>0?"添加成功":"添加失败");

        connection.close();
    }
}

